- The son of the actor Harry Mainhall and the actress Jeffreys Lewis and a nephew of the actress Catherine Lewis.
- He once produced a film for the Anti-Cigarette League called "Madame Nicotine", only to have it destroyed when their Toronto studio burned down.
- Burial: Kensico Cemetery, Valhalla, Westchester County, New York, USA.
- In the 1930 US census, he was recorded as a magazine writer living in Manhattan.
- In 1915 he suffered a physical breakdown due to overwork and exhaustion.
- By 1924 he could only find work as a movie extra.
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